Al-Amri, Ghazi Mohammed A.

King Fahd University of Petroleum and Minerals

Laboratory evaluation of reclaimed rubber-asphaltic 
concrete mixes 
Ghazi Mohammed A. Al-Amri 
Civil Engineering 
January 1990 
Abstract 
The aim of this research is to evaluate in the laboratory the effects of introducing reclaimed 
rubber particles from scrap tires in the preparation of local asphaltic concrete mixes. Rubber is used either 
to modify the asphalt in the order of 10, 20 and 30% by weight, or 3% by aggregate weight as part of the 
aggregates. Characterization tests are conducted on the plain and modified binder; and on the optimum 
Marshall fabricated specimens. Binder tests included penetration,  softening point, and viscosity; while 
tests on the mixes included static tests such as Marshall and Hveem stability, split tensile strength and 
creep tests, and dynamic tests conducted wrere resilient modulus, fatigue and  permanent deformation 
behavior at 25 and 45 C. The results showed that softening point of the binder decreased with increasing 
rubber contents; on other hand, mixes with increased rubber content more than 10% did not show 
improvement in the properties as compared to mixes with 10% rubber binder; which seems to have more 
potential in the enhancement of the properties of these mixes. The results will hopefully lead to the 
modification of the performance of pavement mixes under local conditions. 


Laboratory evaluation of reclaimed rubber-asphaltic concrete mixes

https://eprints.kfupm.edu.sa/id/eprint/1862/1/T_M_A_16.pdf

Laboratory evaluation of reclaimed rubber-asphaltic concrete mixes

Abstract

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King Fahd University of Petroleum and Minerals